/*
 *     Prionace - A file navigator to manage your files
 *
 *     Copyright (C) 2012 Francivan Bezerra
 *
 *     This file is part of Prionace.
 *
 *     Prionace is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     Prionace is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with Prionace.  If not, see <http://www.gnu.org/licenses/>.
 */

package org.fba.prionace.ui;

import java.awt.datatransfer.DataFlavor;
import java.io.File;
import java.io.FileNotFoundException;
import java.util.List;

import javax.swing.JComponent;
import javax.swing.TransferHandler;

import org.fba.prionace.config.ShortcutStorage;

public class ShortcutTransferHandler extends TransferHandler {

	public boolean canImport(JComponent comp, DataFlavor[] transferFlavors) {
		return hasJavaFileListTypeFlavor(transferFlavors);
	}

	public int getSourceActions(JComponent c) {
		return COPY;
	}

	public boolean importData(TransferSupport support) {
		if (!canImport((JComponent) support.getComponent(),
				support.getDataFlavors())) {
			return false;
		}

		ShortcutsPane shortcutsPane = (ShortcutsPane) support.getComponent();
		try {
			@SuppressWarnings("unchecked")
			List<File> files = (List<File>) support.getTransferable()
					.getTransferData(DataFlavor.javaFileListFlavor);

			for (File file : files) {
				if (file.isDirectory()) {
					shortcutsPane.addShortcut(file);
					try {
						ShortcutStorage.save(shortcutsPane.getShortcuts());
					} catch (FileNotFoundException e) {
						ExceptionHandler.showException(e,
								support.getComponent());
					}
				}
			}
		} catch (Exception e) {
			ExceptionHandler.showException(e, shortcutsPane);
		}
		return true;
	}

	private boolean hasJavaFileListTypeFlavor(DataFlavor[] transferFlavors) {
		for (DataFlavor flavor : transferFlavors) {
			if (flavor.isFlavorJavaFileListType()) {
				return true;
			}
		}
		return false;
	}
}
